Specifications:Inner Diameter: 15.6mm / 0.61-inchOutside Diameter: 20mm / 0.79-inchCross-Section Diameter: 2.2mm / 0.087-inch Package Contents: 10pcs x O-Ring Descriptions: 1. They are circular in shape, round in cross-section. For use across a wide temperature range from -4℉ (-20°C) to 212℉ (100°C). 2. Nitrile Rubber or Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Good resistance to many petroleum oils, greases, hydraulic fluids, mineral oil and grease. 3. This O-ring is made of black nitrile rubber, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. 4.
eBay